GCHQ sets fiendish quiz to mark launch of Alan Turing £50 note which could take SEVEN HOURS to solve

It is an enigma worthy of our greatest code breaker, as Britain's spy centre has devised its 'toughest ever' quiz to celebrate Alan Turing becoming the new face of the £50 note by the Bank of England.

from News | Mail Online https://ift.tt/39fmLuh